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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Daniel Stenberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*
* logf() logs entries in a circular buffer. Each logged string is null-terminated.
*
* When the length of log exceeds MAX_LOGF_SIZE bytes, the buffer wraps.
*
*/
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <sprintf.h>
#include <system.h>
#include <font.h>
#include "config.h"
#include "lcd-remote.h"
#include "logf.h"
#include "serial.h"
#ifdef HAVE_USBSTACK
#include "usb_core.h"
#include "usbstack/usb_serial.h"
#endif
/* Only provide all this if asked to */
#ifdef ROCKBOX_HAS_LOGF
#ifndef __PCTOOL__
unsigned char logfbuffer[MAX_LOGF_SIZE];
int logfindex;
bool logfwrap;
#endif
#ifdef HAVE_REMOTE_LCD
static void displayremote(void)
{
/* TODO: we should have a debug option that enables/disables this! */
int w, h, i;
int fontnr;
int cur_x, cur_y, delta_y, delta_x;
struct font* font;
int nb_lines;
char buf[2];
/* Memorize the pointer to the beginning of the last ... lines
I assume delta_y >= 6 to avoid wasting memory and allocating memory dynamically
I hope there is no font with height < 6 ! */
const int NB_ENTRIES=LCD_REMOTE_HEIGHT / 6;
int line_start_ptr[NB_ENTRIES];
fontnr = lcd_getfont();
font = font_get(fontnr);
/* get the horizontal size of each line */
font_getstringsize("A", NULL, &delta_y, fontnr);
/* font too small ? */
if(delta_y < 6)
return;
/* nothing to print ? */
if(logfindex == 0 && !logfwrap)
return;
w = LCD_REMOTE_WIDTH;
h = LCD_REMOTE_HEIGHT;
nb_lines = 0;
if(logfwrap)
i = logfindex;
else
i = 0;
cur_x = 0;
line_start_ptr[0] = i;
do
{
if(logfbuffer[i] == '\0')
{
line_start_ptr[++nb_lines % NB_ENTRIES] = i+1;
cur_x = 0;
}
else
{
/* does character fit on this line ? */
delta_x = font_get_width(font, logfbuffer[i]);
if(cur_x + delta_x > w)
{
cur_x = 0;
line_start_ptr[++nb_lines % NB_ENTRIES] = i;
}
/* update pointer */
cur_x += delta_x;
}
i++;
if(i >= MAX_LOGF_SIZE)
i = 0;
} while(i != logfindex);
lcd_remote_clear_display();
i = line_start_ptr[ MAX(nb_lines - h / delta_y, 0) % NB_ENTRIES];
cur_x = 0;
cur_y = 0;
buf[1] = '\0';
do {
if(logfbuffer[i] == '\0')
{
cur_y += delta_y;
cur_x = 0;
}
else
{
/* does character fit on this line ? */
delta_x = font_get_width(font, logfbuffer[i]);
if(cur_x + delta_x > w)
{
cur_y += delta_y;
cur_x = 0;
}
buf[0] = logfbuffer[i];
lcd_remote_putsxy(cur_x, cur_y, buf);
cur_x += delta_x;
}
i++;
if(i >= MAX_LOGF_SIZE)
i = 0;
} while(i != logfindex);
lcd_remote_update();
}
#else
#define displayremote()
#endif
#ifdef __PCTOOL__
void _logf(const char *format, ...)
{
char buf[1024];
va_list ap;
va_start(ap, format);
vsnprintf(buf, sizeof buf, format, ap);
printf("DEBUG: %s\n", buf);
}
#else
static void check_logfindex(void)
{
if(logfindex >= MAX_LOGF_SIZE)
{
/* wrap */
logfwrap = true;
logfindex = 0;
}
}
static int logf_push(void *userp, unsigned char c)
{
(void)userp;
logfbuffer[logfindex++] = c;
check_logfindex();
#if defined(HAVE_SERIAL) && !defined(SIMULATOR)
if(c != '\0')
{
char buf[2];
buf[0] = c;
buf[1] = '\0';
serial_tx(buf);
}
#endif
return true;
}
void _logf(const char *fmt, ...)
{
#ifdef USB_ENABLE_SERIAL
int old_logfindex = logfindex;
#endif
va_list ap;
va_start(ap, fmt);
#ifdef SIMULATOR
char buf[1024];
vsnprintf(buf, sizeof buf, fmt, ap);
DEBUGF("%s\n", buf);
#endif
vuprintf(logf_push, NULL, fmt, ap);
va_end(ap);
/* add trailing zero */
logf_push(NULL, '\0');
#if defined(HAVE_SERIAL) && !defined(SIMULATOR)
serial_tx("\r\n");
#endif
#ifdef USB_ENABLE_SERIAL
if(logfindex < old_logfindex)
{
usb_serial_send(logfbuffer + old_logfindex, MAX_LOGF_SIZE - old_logfindex);
usb_serial_send(logfbuffer, logfindex - 1);
}
else
usb_serial_send(logfbuffer + old_logfindex, logfindex - old_logfindex - 1);
usb_serial_send("\r\n", 2);
#endif
displayremote();
}
#endif
#endif
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